Name: Curry Sauce
Ingredients: 2 oz butter or dripping; 1 onion; 1 apple; Juice of ½ lemon; 2 teaspoons curry powder; 1 pint stock; Salt to taste

Why it works: Apple and lemon are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 7,551 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

Curry Sauce

Ingredients

Directions

Chop and slice the onion and apple.
In a saucepan, heat the butter or dripping with the curry powder and fry for 20 minutes without browning.
Mix in the flour smoothly, then add the stock and salt.
Stir until it boils, then let it simmer for 20 minutes.
Finally, add the lemon juice.
For a smoother sauce, strain it through a sieve.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Photo for illustrative purposes only · Contact us to use it

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

Apple + lemontop 14% of all pairs

Smell alikemoderate

Cooked together7,551 recipes

Shared aroma: trans-2-nonenal (cardboard, fatty).
Butter + appletop 14% of all pairs

Smell alikemoderate

Cooked together8,706 recipes

Shared aroma: trans-2-nonenal (cardboard, fatty).
Butter + oniontop 15% of all pairs

Smell alikemoderate

Cooked together42,912 recipes

Shared aroma: decanal (soap, orange peel).
Butter + lemontop 16% of all pairs

Smell alikemoderate

Cooked together41,227 recipes

Shared aroma: 3-hexenal (apple, fruity).
Onion + appletop 19% of all pairs

Smell alikemoderate

Cooked together3,206 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).